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  1. 1

    Agroforestry farming systems in Bulolo valley, Morobe Province, Papua New Guinea / by Sonoling, Vida

    Published 1988
    Book
  2. 2

    Changing agriculture : an introduction to systems thinking / by Wilson, Jim

    Published 1992
    Book
  3. 3

    Coconut based farming system research in Papua New Guinea / by Nevenimo, Tio

    Published 1992
    Book
  4. 4

    Crop ecology : productivity and management in agricultural systems / by Loomis, R. S.

    Published 1992
    Book
  5. 5

    Development of farming systems : evaluation of the five-year period 1980-1984 /

    Published 1989
    Book
  6. 6

    The ecology of agricultural systems / by Bayliss-Smith, Tim

    Published 1982
    Book
  7. 7

    The effects of HIV/AIDS on farming systems in eastern Africa.

    Published 1995
    Book
  8. 8

    Escaping from hunger : research to help farmers in semi-arid Kenya to grow enough food / by Lee, Brian

    Published 1993
    Book
  9. 9

    Evaluating technology for new farming systems case studies from Philippine rice farms by Barlow, Colin

    Published 1983
    Book
  10. 10

    Farming systems development and soil conservation / by Norman, David

    Published 1994
    Book
  11. 11

    Farming systems development : guidelines for the conduct of a training course in farming systems development.

    Published 1990
    Book
  12. 12

    Farming systems in the tropics / by Ruthenberg, Hans

    Published 1980
    Book
  13. 13

    Farming systems in the tropics / by Ruthenberg, Hans

    Published 1971
    Book
  14. 14

    Farming systems research : a review / by Simmonds, Norman W., 1914-

    Published 1985
    Book
  15. 15

    Farming systems research and development guidelines for developing countries by Shaner, W. W. (Willis W.)

    Published 1982
    Book
  16. 16

    Higher-yielding human systems for agriculture

    Published 1983
    Book
  17. 17
  18. 18

    Improved upland rice farming systems / by Pande, Hari K.

    Published 1994
    Book
  19. 19

    Indonesian farming systems research and development : the food crop subsystem

    Published 1986
    Book
  20. 20